Film control member for a film magazine



Dec. 19, 1939. 1 H, 5,. PARKER Er AL, 2,184,003

FILM CONTROL MEMBER FOR A FILM MAGAZINE Filed March 3, 1958 /Z :39 40 58 49 F/. 2 /5 "fil 'W C, .www 57 @iwi/)1 I N VEN TORS Patented Dec. 19, 1939 Narren STATES PATENT OFFICE' y FHM CONTROL MEMBER FOR A FILM MAGAZINE J Henry S. Parker and Donald H. Stewart, Rochester, N. Y., assignors to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application March 3, 1938, Serial No. 193,696

8 Claims. (CL 88-17) The present invention relates to film control wall of the magazine casing and including a iilm members for a lm magazine and more particuengaging portion in contact with the film exlarly to a nlm tension control member mounted tending from the film gate to the take-up roll upon the rear wall of the magazine casing. and maintaining a proper tension in such film.

Film tension control members for use in motion f Reference is hereby made to the accompanypicture apparatus without a free iilm loop are ing drawing wherein similar reference charcomparatively well known both in standard types acters designate similar elements and wherein:

of apparatus and in or on magazines for the Fig. 1 is a perspective View of a film magazine magazine type of apparatus, Compact design of with cover removed and illustrating the film conm a film magazine containing one or more. iilm trol members of the invention,

PIcnsion control members is diiiicult because of Fig. 2 is also a side perspective of an open iilm the limited space available for the provision and magazine and illustrates a modified form of the movement oi the film tensioning member. film tension control member mounted on the iev/eral of the known locations for the iilm tenrear edge wall of the magazine casing,

M sloping member, such as on the top or bottom Fig. 3 is a fragmentary, transverse cross section l5 wail oi the magazine casing, are objectionable through the film gate of the magazine and taken because the supports for the spring tensioning on the line 3-3 of Fig. 1. members often mark or scratch the iilm sur- In the illustrated embodiments of our inface. vention, the lm magazine comprises a magazine The primary object of the present invention casing I0 having a side wall II and a top edge no is the provision oi' a film tension member for a wall I2, a front edge wall I3, a. bottom edge wall nim magazine and which is mounted upon the I4 and a rear edge wall II. rear edge wail or the magazine casing. spindles le and Il are mounted in a known A further object of the invention is the promanner upon the side wall I I of the magazine vision oi a film tension member mounted upon casing. The spindle I8 may be fixed and supports 26 one of the edge walls oi.' the magazine casing so a film core I8 on which the supply film roll I9 that the film engaging portion of the tensioning is wound. The take-up spindle Il is rotatably member is at all times substantially parallel to mounted and is rotated in a known manner withthe and edge walls. in the magazine casing III and carries with it a il? Qanother object of the invention is the proiilm core 2B on which the take up film roll 2I is I0 vision oi? a combined guide and retaining memwound. ber constituting a rilm channel leading from one The Illm gate may be provided by an exposure end oi the nlm gate in the magazine and reopening 22 in the front edge wall Il and includsiiientiy supporting a retaining roller which bears ing a backing member mounted within the film against the outer convolution of the supply film magazine and comprising, see Fig. 3, a back suprollt. f port 23 having a recess 24 in whicha pressure v @their details and objects of the invention will pad 25 may move. The film F extends from the be apparent or suggested to those skilled in the supply lm roll I8 through the nlm gate, being by the disclosure which follows. supported across the exposure opening 22 by the Elie aforementioned objects of the invention pressure pad 25 which is pressed by spring 28 n are embodied in a film magazine enclosed by a toward said exposure opening 22. The side guide having a side wall and top, bottom, front il is mounted upon the back support 23 and and rear edge walls. The iilm magazine of the eliminates side weave of the iilm during its moveinvention is also provided with a film gate along ment through the iilm gate. The front edge wail the iront edge wall, with a supply lm roll I3 is also provided with an elongated slot 2l 45 mounted iorwardly within the casing and a take through which the film advancing mechanism of up iilrn roll mounted rearwardly within the casthe associated apparatus may engage and move ing. A combined guide member and retaining the film F and is also provided with holes 28 member forms a lm channel leading from the through which a positioning means of the assoto lower end of the film gate and has a resilient ciated apparatus may engage the iilm perforaportion carrying a retaining member which is tions. pressed against the supply film roll. Finally, the The lm, in its path from the iilm gate to the iilm tension control within the magazine is obtake-up, passes the supply film roll I0 and unless tained with a resilient member having a body proper precautions are taken, this film leaving as portion which is mounted upon the rear edge the gate may become tangled with said supply u mounted by a nange 3l on the side wall Il in spaced relation to the bottom edge wall I4 to form a nlm channel and having embossed nlm engaging margins 32. Said guide Ill carries a reaillent portion 3l rendered more nexible by an intervening notch J4 and having a pair of ears 3l between which the retaining member or roller Il with nanges l1 is journalled. Resilient portion Il presses the nanges 31 of the retaining member against the outer convolution of supply nlm roll I 8 so that the natural resiliency of the nlm will not produce premature uncoiling o! supply nlm roll Il.

The nlm F extends from the nlm guide channel just described laround the nlm engaging portion of a nlm tensioning member'io the take-up nlm roll 2|. Even lateral winding of the nlm on said take-up nlm roll 2l is insured by a guide i'lember 3l hinged at n to the top edge wall I2.

having embossed nlm engaging margins 4l and having a pair of ,lateralprojections 4l for engaglngthe opposite edges of the nlm F as it is wound onto take-up nlm roll 2|. The nlm tension control member is mounted onl therear edge wall Il o! the magazine casing I! according to the present invention and may be provided in either of two forms, the preferred form4 being illustrated in Fig. 1 and a modined form being shown in Fig. 2.

The preferred form of the nlm tension control member comprises abody portion 42 secured by rivets 43 at its upper end to the rear edge wall Il, a lateral nange 44 which is parallel and adjacent to the side wall Il, and a curved nlm engaging portion 45 connected at its inner end to the lateral nange 44 and provided with embossed nlm engaging margins 4I. Film engaging portion 45 is supported by lateral nange 44 in spaced relation to the lower or free end o! body porf tion 42 so that the nlm F may bereadily threaded around said nlm engaging portion 4B. Since said nlm engaging portion 4l is supported from only oneend on lateral nange 44, there will be a tendency for said nlm engaging portion 45 to be inclined with respect to the nlm upon nexing of the body portion 42 and the nlm will build up unevenly on the take-up nlm roll 2i. Such tendencies may be eliminated, however, by providing a recess 41 in body portion 42 along the inner edge thereof adjacent to side -wall Il. Such recess 61 permits lateral nexing of the body porv tion 42 to ,compensate for the lateral flexing in the opposite direction of the nlm engaging prtion 45 with respect to lateral nange 44. y 'I'he modified form of the nlm tensioning member comprises a bracket 4I secured by rivets 49 to rear edge wall Il, a body portion Il connected by a hinge Il Ato bracket 48 and biased toward said rear edge wall I! by a spring 52. The nlm engaging portion comprises a roller or post I having enlarged ends 54 for engaging the marsins of the nlm F and is mounted on a lateral nange il connected to said body portion 50.

Either type of nlm tension member will give very satisfactory tension control of the nlm engaging and extending around the nlm engaging portion ofsaid members. As the nlm is advanced toward the rear of the magazine it may. under 'nlm roll il. 'Ihe precaution contemplated by some conditions, move against the lower or free end of the body portions.' In order to prevent scratching of the nlm under such infrequent condition, the body portion 42 is provided with a pair of projections I8 and the body portion Il! is provided with a pair of embossed nlm engaging margins 51.

Since detailed variations of the guiding and retaining member or the nlm tensioning members illustrated herein may be/accomplished without departing from the scope o! the invention. the present disclosure is to be construed in an `illustrative sense and the invention itself is de-A nned by the appended claims. Y

Having now particularly described our invention what we desire to secure by Letters Patent of the United States and what we claim is:

1. In a nlm magazine, the combination with an elongated casing having a side wall and a top, bottom, front. and rear edge walls, said top and bottom walls being longer than said front and rear walls, anim gate including a backing memberl for supporting the nlm across an expure opening in the front edge wall of said casing, a supply core and nlm roll mounted in the forward portion of said casing, and a takeup core rotatably mounted in the rearward portion of said casing, of a combined guide member and retaining-member having a stationary portion forming with said bottom edge wall a nlm channel which extends from one end of said nlm gate and having a resilient portion carrying said retaining member which is resiliently pressed against the outer convolution of said supply nlm roll, and a resilient member mounted upon the rear edge wall of said casing, having a nlm engaging portion in the lower rear portion of said casing and for controlling the tension in the nlm which extends from said nlm gate to said takeup core.

2. In a nlm magazine, the combination with a casing having a side wall and top, bottom, front, and rear edge walls, a nlm gate including a backing member for supporting the nlm across an exposure opening in the front edge wall of said casing, and a nlm take-up roll rotatably mounted in the rear portion of said casing, of a nlm engaging portion located beyond said nlm roll on the opposite side of said nlm gate for contacting the nlm strip at the apex of the acute angle path formed by the nlm in its passage from said nlm gate to said take-up roll, and a support for said nlm engaging portion mounted in said magazine and which resiliently urges said nlm engaging portion to exert more effort longitudinally of the nlm extending from said nlm gate than along the nlm tangential to said take-up roll.

3. In a nlm magazine, the combination with a casing having a side wall and top, bottom, front, and rear' edge walls, a nlm gate including a backing member for supporting the nlm across an exposure opening in the front edge wall of said casing, and a nlm takeup core rotatably mounted in the rearward portion of said casing,

of a nlm engaging member for contacting one surface of the nlm in its path from the nlm gate to said takeup core, a bodyportion resiliently mounted on said rear edge wall and on the other side of the nlm, and a lateral portion adjacent said side wall and connected between one end of i said nlm engaging member and said body portion.

4. In a. film magazine, the combination with a casing having a side wall and top, bottom, iront, and rear edge walls, a nlm gate including a pressure member for supporting the film across an exposure opening in the front edge wall of said casing, and a film takeup core rotatably mounted in the rearward portion of said casing, of a leaf spring film tensioning member` secured to one of said edge walls, comprising a body portion provided with a recess adjacent to said side Wall, a lateral flange parallel and adjacent to said side Wall, and a curved film engaging portion connected at its inner end to said ange but spaced from the free end of said body portion.

5. In a film magazine, the combination with a casing having a side wall and top, bottom, front, and rear edge walls, a film gate including a backing member for supporting the film across an exposure opening in the front edge wall of said casing, and a film takeup core rotatably mounted in the rearward portion of said casing, of a leaf spring film tensioning member secured to one of said edge walls, comprising a body portion provided with a recess adjacent to said side wall, a lateral flange parallel and adjacent to said side wall, an arcuate film engaging portion connected at its inner end to said fiange but spaced from the free end of said body portion,l andmarginal ridges on said lm engaging portion and the ady jacent free end of said `body portion.

l6. v1n a film magazine, the combination with a casing having a side wall and top, bottom, front, and rear edge walls, a film gate including a backing member for supporting the film across an exposure opening in the front edge wall of said casing, and a lm takeup core rotatably mounted in the rearward portion of said casing, of a filmv tensioning assembly comprising a bracket mounted on the rear edge wall of said casing, a flat arm hinged to said bracket for movement about an axis parallel to said edge wall and including a lateral flange parallel and adjacent to said side wall, a cylindrical film engaging portion mounted from one end on said lateral flange and around which the lm extends in its path from the film gate to the takeup core, and a resilient member acting upon said arm to move the same toward said rear edge Wall and providing tension control for the film.

'7. In a film magazine, the combination with an elongated casing having a side wall and top, bottom, front, and rear edge walls, said top and bottom walls being longer than said front and rear edge walls, a film gate including a. backing member for supporting the film across an exposure opening in the front edge wall of said casing, a supply core and film roll mounted in the forward portion of said casing, and a t'akeup core rotatably mounted in the rearward portion of said casing, of a combined guide member and retaining member having a stationary portion forming with said bottom edge wall a film channel which extends from one end of said film gate, and having a resilient portion carrying said retaining member which is resiliently pressed against the outer convolution of said supply film roll.

8. In a film magazine, the combination with a casing having a side wall and top, bottom, front, and rear edge walls, a film gate for Supporting the film across an exposure opening inthe front edge wall of said casing, and a supply core and film roll mounted in the forward portion of said casing, of a combined guide member and retaining member, having a stationary portion forming with said bottom edge wail a film channel which extends from one end of said film gate, having a resilient portion carrying said retaining member which is resiliently pressed against the outer convolution of said supply film roll, land being provided with a lateral notch between said stationary portion and said resilient portion.

J HENRY S. PARKER. DONALD H. STEWART. 

